diff --git a/js/common/modules/org/arangodb/foxx/preprocessor.js b/js/common/modules/org/arangodb/foxx/preprocessor.js
index 82753c8699..cb2e36efc0 100644
--- a/js/common/modules/org/arangodb/foxx/preprocessor.js
+++ b/js/common/modules/org/arangodb/foxx/preprocessor.js
@@ -128,7 +128,8 @@ extend(Preprocessor.prototype, {
                replace(/^(.*?)\*\/.*$/, '$1').  // end of JSDoc comment
                replace(/^\s*\*/, '').           // continuation of JSDoc comment
                replace(/\\/g, '\\\\').          // replace backslashes
-               replace(/"/g, '\\"');            // replace quotes
+               replace(/"/g, '\\"').            // replace quotes
+               trim();                          // remove leading and trailing spaces
   },
 
   isJSDoc: function (str) {